Revolving grate for gas-producers.



H. REHMANN.

Patented Mar. 30, 1915.

anion HUGO REHMAN'N, 0F DUSSELD'ORF, GERMANY.

REVOLVING GRATE FOR GAS-PRODUCERS.

Specification of Letters Patent. Patented EH31", 3t), 1915,

Application filed September 2, 1913. Serial No. 787,755.

To all wk 0m it may concern: v

. Be it known that I, HUoo RiHMANN, a subject of the German Emperor, and resident of Dusseldorf, Germany, have invented certain new and useful Improvements in Revolving Grates for Gas-Producers, of which the following is a specification.

The present invention relates .to improvements in revolving grates for gas producers particularly to that class disclosed by my former Patent 937,466 of October 19, 1909.

It is the object of the present invention to improve the grate so as to adapt it-for use with fuel wl ich'does not favor the formacording to my prior patent the flimsy ash particles constituting the residue of combustion are quickly lumping together andform a dense layer especially at the inner.

sides of the exterior turret facing the middle turret. Said layer is greatly impeding the introduction of air so that a non-uniform distribution of the air within the generator is caused.

The improvements of the grate according to the present invention consist chiefly in the arrangement of a bridge in the shape of a saddle-roof connecting each of the exterior faces of the turrets with the middle turret. This bridge is suitably starting at the apex of the outer turret and prevents a too violent stirring of the products of combustion of the browncoal briquets and thus avoids quickly lumping together. Moreover, the peculiar saddle-roof like shape of the bridge facilitates a readily sliding of the residues away from the center of the generator. The blocking of the air introduction is prevented by providing only that wall of the bridge with perforations which is oppositely disposed tothe direction of rotation of the generator; said perforations being shielded in the well known manner. The improved construction of the grate facilitates moreover the application of a new method of air introduction, as the air need not be introduced under the single apexes as it wasthe pipe are not exposed under the grate but they are hidden in the brick Walls or are guided along the same. By this construction the. access to the generator shaft for the purpose of making repairs is greatly facilitated. Besides, all orifices of the air distributing devices are averted from the grate in such a manner that no products of combustion can block the same.

In the accompanying drawings: Figure 1 is a side view of the improved grate. Fig. 2 is a plan view of the same. Fig. 3 is a'section on line II of Fig. 2. Fig. 4 is a vertical section through an embodiment of the air distributing device.

As shoW-n'in Figs. 1 to 4 the turrets b, 0 are mounted in a rotatable pan or basin q carrying also the customary producer body p supported in the usual way. The apcxes a of the lateral turrets 7) are connected with the middle turret c by a saddle-roof bridge (I. lhe side 1! facing the direction of rotation of the generator is not provided with perforations while the side (Z which is averted from said direction of rotation is provided with perforations, which are covered or shielded in the well knownmanner. The air can freelybe distributed toward all sides and a uniform distribution of the same across the entrance shaft is obtained and the gas generation is greatly improved in uniformity.

I claim:

1. In a grate for gas producers, in combination, a tower-like erection arranged in the middle part of the grate plate and consisting of-a plurality of stepped turrets integral with each other, a saddle-roof-bridge .conncti; 1g each of the outer turrets with the middle turret, and means for leading a blast of air into said stepped turrets, substantially as set forth.

2. In a grate for gas producers, in com bination, a tower-like erection arranged in the middle part of the grate plate and consisting of a plurality of stepped turrets 1ntegrul with each other, a saddle-roof bridge connecting each of the outer turrets with the middle turret, and perforations in one of the Walls of said bridge averted t0 the direction of rotation of the gas producer for leading a blast of air into said turrets, substantially as described.

3. In a grate for gas producers in combination, a central hollow revoluble tower, a

plurality of steppedturrets integral therewith, a saddle-roof bridge connecting said turrets, said saddle bridges having apertures formed therein averted to the direction of rotation of said grate, substantially as described.

In testimony whereof I aflix my signature in presence of two Witnesses.

HUGo REHMANN. 1; s,]

NVitnesses HELEN Norm, ALBERT NUFER. 

